The Bolt,tee Head, cataloged under National Stock Number 5306-01-408-4064, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney. Government technical data includes 13 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-408-4064 |
| Primary Part Number | A8A0591 |
| Item Name | Bolt,tee Head |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney |
| Status | ACTIVE |
| Head Height | 0.144 INCHES MINIMUM AND 0.166 INCHES MAXIMUM IN |
| Fastener Length | 0.869 INCHES MINIMUM AND 0.889 INCHES MAXIMUM IN |
| Thread Length | 0.453 INCHES MINIMUM AND 0.463 INCHES MAXIMUM IN |
| Material Document and Classification | PWA 96 NI ALLOY, CAGE77445 MFR REF SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | ROUND W/WRENCH FLATS CHAMFERED |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 0.290 INCHES MINIMUM AND 0.300 INCHES MAXIMUM IN |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 28 |
| Material | NICKEL ALLOY OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Diameter | 0.480 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| A8A0591 PRIMARY | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
NSN 5306-01-408-4064 is a Bolt,tee Head, manufactured by Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-408-4064 has 1 manufacturer part number on file: A8A0591 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney).
Key specifications for A8A0591: Head Height: 0.144 INCHES MINIMUM AND 0.166 INCHES MAXIMUM IN; Fastener Length: 0.869 INCHES MINIMUM AND 0.889 INCHES MAXIMUM IN; Thread Length: 0.453 INCHES MINIMUM AND 0.463 INCHES MAXIMUM IN; Material Document and Classification: PWA 96 NI ALLOY, CAGE77445 MFR REF SINGLE MATERIAL RESPONSE OVERALL. 13 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.